Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2a759dba8fe2c64f6345cd932aa9c9d9ebe599425238169cc17ee1b29ddc738e' 
  AND token = 'ligty2yTwMujEDUVdLJT3vpCeSPMWzylsoy7PQjdvmI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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