Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd8af6167939b287fb975ed495d16de810554ca34a4ee48357e9f1dc4364c894c' 
  AND token = 'ZUHqopxmn23paUp6v1X/awLe7IAthz4E4vawJ63P2SQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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