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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = 'ce1c66d437a8c1331dbd3a79d85ceba8f8329a27ab69c588cacb306320d08ace' 
  AND token = 'k/w1J/WWFapEoDAyZ1LmOoluSxLtkyUpkOpk/oChKtI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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