Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cd71e53d629918f183a0f05c9cf6a470e854ec7484c7cc06168d30cd6d06c1d8' 
  AND token = '4Sw4gROGI8zblTELu1ueIkN1/AcsesUja1Wu6jgq+1E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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