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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '095dec76b419cb55f30a3ca8d0b2ac409ff919ffcf79ca4ee744abca2e46b395' 
  AND token = 'D2iOY6bElTWkPhOEi2vq0c324wSgdvd31gtTuYzDlsI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

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