Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '43ec7ad905bb3b9c70b1c5433d003ea9b8ade4c97616e28709e65c7a9ea123b5' 
  AND token = '8oD8QV4RXN62H73ukD4tyjzPt29PplKFh02R0CybjhM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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