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SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'bf3411dabea67ff3edd6b02b076ef0c5ed33291961eac7f21a8283c9cce1e6ec' 
  AND token = '2oFwY3yC+gSPuUKRJipuF79pXcLTdUwbfG8wRVKbyPM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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