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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0692c7ece54264a0b3a175df66f3e5341b627935f0e5db55356a763fd9601024' 
  AND token = '4rutY2yX/OTBdm9UlfFudkNvdz7QJlF0Cb/afNSALXI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00055

JSON explain

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