Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a19925d0860d324d7f8d298ca102629203edb17047f95c526ea8175f6250a3c5' 
  AND token = 'tQ1SkEcAfpDNXI5LZaJgylKHoPJTgWBu5PdhbZOtXXo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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