Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b74237d82c8ccc6d2670349842eb11b42bff27ba8c4741710d14bc2e3dbf868f' 
  AND token = 'YtcPgocrVvFxN54cuggOfMOyij3/S96B1iXBCa21EbA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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