Sandbox

SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = 'd4281d25c03879f2c5a9699967cbd2a2247ff7318f9d4709b7cb0e2be96d5a0b' 
  AND token = 'D3JeBtAeyrOLKSht6ElTMF1A+WiLtXhO5jEHv1gVw10=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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