Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7932ba68d4aa57b541f7acce29e46b685b0509c2e754accc12099400c56135f5' 
  AND token = 'FpiuMIlUFEd3XQZcHkw1l7SxzA1DOg4zbjvwg9p8B64=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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