Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e9c0daa97603284e31b09e449fefbd6114626cd44b60063ef4711e2cebf7b875' 
  AND token = 'IMAGQqaXyD1ET7Ki3Qwo314eowqr4LCbla3lC2/rDCU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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