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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1c7d0f129b5c84e1c74b4a9f275a0540407aef5917241e1ed179c580e7e70670' 
  AND token = '6Rr0uHxkskvbJC/66cKgM1NhjdTZ0I5iwcgmmp5VP+U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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