Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1d966fe2bcacb848c8948cdd31ae81d5dbf8ab8bde953bcc9dd4abb64d1cd805' 
  AND token = '0V800sBZpNJn914bNuq6amLLpFq4gPO/2Fni3cZdpmE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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