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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '182fd247fc2d18f371c71e5a8f70a7f281a5ef37a8c27e4b16e326a35cd2d9dc' 
  AND token = 'Og62eE8l4LqCAtp/GiXM6XNnD833Od2mSsw72MsLQ1o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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