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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7ccfb9ccb1b6989b15493a94f2fdc1600343faeececc92d4c468e8e87db0ecd9' 
  AND token = 'S/SnpOhmHfqxR7cilvaaO22L6QVttsl19w+vvkGk2cY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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