Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd7b763f0555078584ac3d7a1b0f2fe1172b5a684c201f56849fed238bac8cb95' 
  AND token = 'f2AiONzhLVMjqtpw1h8N2YAS23BBV1UPk9dPFQ+B1L0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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