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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '609f044a9a343516c7b17289d8131e93bffc18fafea2370aaf8e2a43846baacd' 
  AND token = '/pyVe7YP61E7Bdlpgoy3v5Ef5QFUaDK/rBsk8wGJxrE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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