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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5035e39244a28fb801578eae0b1c6a0d2029392bbed14038815a9f2811ce3ca7' 
  AND token = 'Fl2j8iCA5UgtHsC0mr7XdagHm85F6FM5btkNib6rWJA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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