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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '62b26994b3f4466ee8664091156496c6b99e956b8a61f38bb1a441986f3e3db0' 
  AND token = 'hieEhCBjMP4IXi6lg/j3wWFYq/Vf2hx3FComP28ZdXI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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