SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '295bf9b6d914f4a92116db39482fc7085c696e6ef6c36f7c5ca83a2d1c22edeb' 
  AND token = 'tJioWqbdAEVKUzmUAkbLYBQwaNzFrKpFl0Qy1uZ/Oxc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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