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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '666d15566529e6db61953ba97e28044c5a370034879f6b8fe4e97c4780d332d5' 
  AND token = '0KA0thf9WcVN+CNUUYnVy08Z0MNI+/JxXRt/65RKVXU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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