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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9110338d4edb7a99cc869496d5898212e1ca97038ac1f7eae44cabc1c7e66184' 
  AND token = 'xoDA1fp5DpL88JGgNPHrBhmxAjlaB21Wb9ibtBE0XQQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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