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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0663eb37f341c82c0d9ae2e9ffb84a5eec9110194b8790b1b8b7b12900fa2116' 
  AND token = 'rfKSeLferw7FYJ7dWGmqP+cRbxGyj2fcikGT3p7g9qA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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