Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2a257541f9b9bf8ea7d0524b75ddd3e5a1177e2db43d5ce336a449786fb9f46a' 
  AND token = 'w9q9WAVOmreord4ytmH+NiKOYFjchk8dirs4tKYpfZQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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