Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'da4451c20c133f7ebe802a1afb775b01401f0b7ae7d33fceadaa983beddbc405' 
  AND token = 's8P0dE9B3olEgj00JEStYd0ELB+00V437FUkMjLunm8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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