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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fbf47bb109e8694a8952959a50391e940d41fbb98408b47445101d13542385ed' 
  AND token = '0tcxffXWC8mE3vigSlJDgqHMB3NjGZ/oN13itrMqAC0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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