Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7c16ccabc331143745688cf4b902f3b6016a146b0d68c4588ca8f73dffde8e64' 
  AND token = 'OpTcotjdAc7JkZdKq1nORi06rTbWnKcpF9r1UXDOxEk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}