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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ebd520e829dec593f01adc2b4de97ece20535f58f1f43b85eb292ca504df9e57' 
  AND token = '7HIVxTW7ngT4ICy5s/XjoBSX99nLDryRp0ZeLhfJr5w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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