Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '95a8d8aa9d89dbf7cd42f225569a2f1ddb1018ee398d73344e6abb6f98a39af4' 
  AND token = 'T2e0F0moYTaXNFz3JhX09UxwNsrd0rryMUu88F+D8YQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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