SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd01799387fc82f3eeee3094dd4c3652c726025d16ef921e14ed4a16d79ebc862' 
  AND token = 'Zh+WehdMpR0VPjM7xPVP/LqsvNJmnZHRlzwAz0Fem+s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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