SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '44a29e395f4c9a9e39ac0a54937cc09e6158768dc644ee904e8e2b3a27e8e9f1' 
  AND token = 'V+JBnquZqu2zuzOGT6yslmD1RK/7GJV6zgIocL7G7BM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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