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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = 'a60801ad7045b97f92a5122dacf8ee60fe9de2b0cb516689cbf47067f6d1cdfc' 
  AND token = 'Tarv5NdbDanvJdAlDfEIhBxXHVxxollCOjZieW2wgqk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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