SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f23c8d042c21a1e4bb51edb05fcfa88fa569d183a8e48d58b6811b7a7b47a832' 
  AND token = 'qeGin7skrmfzPxh+h6/5vSuyKgoqic+e/R26dWzJvJE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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