Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd780d0286378c6c1cafd8fe3d2fa2693946ca63654671ec084fb67cda541350d' 
  AND token = 'sHWwJUHtSWyshdDyBm52JA3ArWX4s/nBW5DBotmBnPw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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