SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = 'babfafe3f63c85841f832566e4377d5c22fe21f2ec8e82d9a776aec0b5e4a507' 
  AND token = 'hFojBuvRoH4A3IPEp+v51r3oHAiYKR0Q/dVnETISGlU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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