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SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = '09d3aced83d1186412a6a85ffec956a9b6c7f12344478cab14d79b4a3965c238' 
  AND token = 'w385B5BtyPp70+pwJwidiGWP19DbkQkco5M+kLey5ws=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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