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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8a955d07bfb66eb4cd9f11138e59d50287f9c8ba9c2d20b2fbfb4ff92e4090ef' 
  AND token = 'ANVIgdlC7vDZPabHg/esu7EcGE6msNRb8dGm5SQbQD4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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