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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7a0196a8c9b1771f0b54fa127e306a2177ae7012e9c7f6a2aec314a583ae19f3' 
  AND token = 'cFGtkevubo73/eqz5HEn0HtZEP4v38yYt7ArOUsZFCM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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