Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '028195214314abc673997554b4f58f71d02b710b3443f46ade7111d6b2c31cdb' 
  AND token = 'No0NtVmokGYD1ch1Y7we6gVF8Lj6mSp8WN8aAjPjP/w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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