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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'db86496056e6a2080c4ed06dbc7c58e8d986bf72ba9312595cc13127d403161e' 
  AND token = 'iJGefBLYwRhE/RnXsqc6a4Wp4mIuiCLGuDm5S887Gso=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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