Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d67f4ecc07a4227e6bae796fa10faf9803ae8059967dde56b87584a734f45e9' 
  AND token = 'dODoZvX01R93DGMfQlkkRWU1L+4AhwcGW0AdCy+Nc0Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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