Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '18eddfc5311a1bcf7327f2c24088ba88cac50668d25fb98e21f0c7077611664c' 
  AND token = 'OhQGqbeL3k1FV57+R+tB4cbHyZMw+R8Hizr9ZXH2Qe0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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