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SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = 'eceb60f9858c00f93bb72e3ffd2a26a13c527872f983fe0a953547a8bdb34d83' 
  AND token = 'Ty/3uWDX6R99H857TCaTbOD3OmO5ARhfk4mBRF33oLE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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