Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c0dd445e0acbda044268adce63120e537c576433ec8a762d82a1f0a1f3275ae8' 
  AND token = 'Ny+Ku5IDWzAtjJud49KXP8+Aph2B0fCyBVYMRq1Bqtw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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