Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e3ee01c1bc6c39f8da6723013fd157c9cf3be29cade6039dfd8fab832149ecaf' 
  AND token = 'Ynh8qQry2zSniYmWvpeWK9vAmQrhuteqRACy8G1N9oE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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