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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e3ade0d85e23c2bd1a08f8ca9160d07b2ad206bef458012061306c468c5bfac1' 
  AND token = 'Wfyo3WOx58ho8cZAfYa5tVAQYLsCEtygJE9u/mqeLzw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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