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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '907d1b378d596e2c158287f4cb8821404c82f3956578bb41ff8ac55facf69962' 
  AND token = 'CCH3zaZ2Nb2SPiatJaNqBnJ1QoDCd8Z04V0qDbDU01Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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