Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '57ea36aeb4d17dc105b1f0da7265e9252a26e77ce19a2299e2ccb22d9335f73b' 
  AND token = '2od0S2QrV1Ua0DR0fKvZza9Q50on9XB65kRzi7SAhOk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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