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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ea8a70cae97619b5647131a536b3bd34c365d8b5c87abb1589073fe86df1a913' 
  AND token = 'wFF1AevjSJYaJ8D1hoEt/Z+kYBnBRoaWmNyTQb+q7Xo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

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