Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bf4127e273ba11d7bbeebbe9f49885a259fbb3b692b57856bf09d40306dacbae' 
  AND token = 'ZJlzO2LppvZOBb1IIBgCii+5wXZk80GuIiSSOD84tGI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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