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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '61d13eca8be7d149141d73a25f46318e7944842a5f2cf53a48e7adad39b02449' 
  AND token = 'cJkbI0/F75OjRn79w2fT2EZC0traOnMGYyC/hpHInv4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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