Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '569b0574a9222c3b7bf4c6878d94cb50327d318cc127d58200d0caeb0dc6f95d' 
  AND token = 'yIhAQCow7ojgNStKSKrbc/G26WUgRNtSLO2GEs5gblc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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