Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2aab52d739af79ee0ac0be46e3d4c09f24ba9f955682df487bc8f0d5f5adcd7e' 
  AND token = 'CkNZtBfX3aLTnstoub9ulnd19/7vZsF+YitZiO0vZzU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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