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SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = '8095de22623b9c161fa3acf7c674092e4dfeb0f510004b4f36f860b1be453824' 
  AND token = '26/crC530G5el/wl70RfwSyM6Y6bTdjkGb+WmlD0gT0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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