Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ecead7e9903372c10a2c1ed2bb1942585cc62bc430e55ef24d9dfa2fb5ca1e53' 
  AND token = 'SuxI6XXUEPbFtVHnIYMPAimEcjk/ejm4u7gQ0tJFrhg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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