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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '62e43d2ad281e613ce7cfed4d766b01bc89fe1418c65e97bdf1fffa8929dde41' 
  AND token = 'Cy31j7AAMmEEx0rx5Jh5gtVB8Z0MG6GS5HJiVAtOJ4g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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