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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = 'e5334ed20fc646d8fd6072b5f1dbc7d3697ffa08b956eafbe442c021985ef832' 
  AND token = 'lz25Jdpa3rB1AphijXuYYlrV3obIsdJUjPU0enPQ8Y8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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