Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e2fe7ec1750855611c14b0f05add97d30e4b2d1e1b812ba7165abd27a0b6e657' 
  AND token = 'Pj2FFzkClV2Ea5jL4cC4nfJut6rlooOAH/Pn/z6z4Kw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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