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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9d0d3f7dc03e0f05ef0b990410f88d6d5c50faebcc1d764dafdef2031d90fbda' 
  AND token = 'ce5OKdZ1RQlsJDnUw/T4faRii+1z1/xw/bv3GH7meMk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00054

JSON explain

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