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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5938d701cb3ebbdc3cce01c76eec0947b44a4c5bcf9976cb5a9ecbf6843272b9' 
  AND token = 'v5aSyxOVX9meYCtiqylPi/8E7pd46jN8+wENTUzUC5o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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