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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'edc04ff0438eff6a19a6dbbea0287cfb17f60065f8eaec120e5f0d22665f20d5' 
  AND token = 'YMF20HaV5B/J7sBVwFH79L+pB+Vs49gMYdDDnO1tDeI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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