Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd4aac76068c128ec243c5a85ad8e7034133a0870ee386eaa808573413ad22e3d' 
  AND token = '6n/Shu8LU7/66JKp5jtTR/f/ENsMiZlIVjPb7I63lFo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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