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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cbefecc2b03d0b22695b84f641937a031af30f0b148a181bc90b12362e24027c' 
  AND token = 'XqMUs5jfJp4VLseAsf5Hzd6XBZ2js4+B7y1RjWr9MIU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}