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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '317266495d74577b8fa555ff3cdc6906fdd14bb295eb20fbe5f88792335c5e28' 
  AND token = 'RsPatk0QD4qDy8W2dlNL46GFcFHa7ylTMD1iV6VvYBU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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