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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aa1204796c8dd9d665e2ac086de22a48ddeed2bfed44a06d5eaea66997489485' 
  AND token = 'Sz6/PTGK1+x9Kl/AcuyX7vsQQN+UEJng3iKjLtrDUYM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00064

JSON explain

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